If it has a vba interface then the call to:
[VBA]
Application.DisplayAlerts = False
[/VBA]
may be different and you should be able to research it in the help files in the inventor vb editor.

For instance, in Word it looks like this:
[VBA]Application.DisplayAlerts = wdAlertsNone[/VBA]

If you have intellisense turned on you should be able to type:

application.displayalerts =

When you type the = sign or the space after it, intellisense should give you some options.

Hope this helps.